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When most of us think of a framer's tools, we imagine long-handled hammers, saws without guards, and topheavy nail guns. When we think of calculators, we're more likely to imagine Cal-Tech, theoretical physicists, and Revenge of the Nerds. But whether you cut roofs in the tracts or build high-end custom homes, there is a calculator that can significantly improve your speed and efficiency as a framer. And that kind of result goes straight to the bottom line. It is appropriately named the Construction Master II. Originally developed in the early 1980s, the Construction Master traded on its ability to work in feet, inches, and their fractions, and to convert these to yards, square feet, cubic feet, and board feet. Subsequent improvements